@media all and (min-width:768px) {
    :root{
        font-size: 14px;
    }
    .container {
        max-width: 750px;
    }
}
.col-sm-12 {
    grid-column: span 12;
    border: 1px solid #ccc;
}
.col-sm-11 {
    grid-column: span 11;
    border: 1px solid #ccc;
}
.col-sm-10 {
    grid-column: span 10;
    border: 1px solid #ccc;
}
.col-sm-9 {
    grid-column: span 9;
    border: 1px solid #ccc;
}
.col-sm-8 {
    grid-column: span 8;
    border: 1px solid #ccc;
}
.col-sm-7 {
    grid-column: span 7;
    border: 1px solid #ccc;
}
.col-sm-6 {
    border: 1px solid #ccc;
    grid-column: span 6;
}
.col-sm-5 {
    grid-column: span 5;
    border: 1px solid #ccc;
}
.col-sm-4 {
    grid-column: span 4;
    border: 1px solid #ccc;
}
.col-sm-3 {
    grid-column: span 3;
    border: 1px solid #ccc;
}
.col-sm-2 {
    grid-column: span 2;
    border: 1px solid #ccc;
}
.col-sm-1 {
    grid-column: span 1;
    border: 1px solid #ccc;
}
// boostrap
.hidden-sm {
    display: none;
}